Income tax withholding Treasury Stock Acquired Shares Withheld Restricted Stock And Restricted Stock Unit Vesting [Member] Shares withheld in payment of income tax withholding owed by employees upon vesting of restricted shares and restricted stock units. 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. Maximum Maximum [Member] Mobile handsets Mobile handsets [Member] Mobile handsets Stock Compensation Plans Share-Based Payment Arrangement [Text Block] Equity issued pursuant to employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Statistical Measurement [Domain] Statistical Measurement [Domain] 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. Mobile service Mobile service [Member] Mobile service Title of 12(b) Security Title of 12(b) Security Document Fiscal Year Focus Document Fiscal Year Focus Merger and acquisition costs Business Combination, Acquisition-Related Cost, Expense Franchises Indefinite-Lived Franchise Rights Stock compensation expense (see Note 11) Share-Based Payment Arrangement, Expense Convertible Preferred Units Convertible Preferred Units [Member] Convertible Preferred Units Revenue [Abstract] Revenue [Abstract] Revenue [Abstract] Field and technology operations Field and network operations Field and network operations costs OTHER LONG-TERM LIABILITIES Other Liabilities, Noncurrent Segment Reporting [Abstract] Goodwill Goodwill Product Information [Line Items] Product Information [Line Items] Common stock Common Stock, Value, Issued Depreciation and amortization Depreciation, Amortization and Accretion, Net Foreign currency remeasurement of Sterling Notes to U.S. dollars Realized Gain (Loss), Foreign Currency Transaction, before Tax Labor Employee-related Liabilities, Current Common Class C Common Class C [Member] Accumulated Deficit Retained Earnings [Member] Transition expenses Business Combination, Integration-Related Cost, Expense Operating costs and expenses (exclusive of items shown separately below) Operating costs and expenses Operating Expenses Rollforward of Consolidated Shareholders' Equity: Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares outstanding (shares) Common Stock, Shares, Outstanding Payments for debt issuance costs Payments of Debt Issuance Costs Derivative Instrument [Axis] Derivative Instrument [Axis] Diluted (dollars per share) Diluted earnings per common share attributable to Charter shareholders (dollars per share) Earnings Per Share, Diluted Entity Current Reporting Status Entity Current Reporting Status Residential revenue Residential Product Line [Member] Residential Product Line [Member] Net cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Amendment Flag Amendment Flag Noncontrolling Interest [Axis] Noncontrolling Interest [Axis] Noncontrolling Interest [Axis] CURRENT LIABILITIES: Liabilities, Current [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Ownership [Domain] Ownership [Domain] Adjustments to reconcile consolidated net income to net cash flows from operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Change in noncontrolling interest ownership, net of tax Noncontrolling Interest Increase Decrease From Changes In Subsidiary Ownership Amount of increase (decrease) in noncontrolling interest from changes in subsidiary ownership. Property, plant and equipment, net of accumulated depreciation of $41,990 and $41,514, respectively Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Availability under credit facilities Line of Credit Facility, Remaining Borrowing Capacity Common Noncontrolling Interest Common Noncontrolling Interest [Member] Common Noncontrolling Interest [Member] Credit facilities(b) Credit facilities [Member] Credit facilities Related Party Transactions Disclosure Related Party Transactions Disclosure [Text Block] 5.125% senior secured notes due May 1, 2027 5.125% senior secured notes due May 1, 2027 [Member] 5.125% senior secured notes due May 1, 2027 Entity Address, State or Province Entity Address, State or Province Stock options granted in period (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Revenue Revenue from Contract with Customer [Text Block] Common stock, par value (dollars per share) Common Stock, Par or Stated Value Per Share Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Notional amount Derivative, Notional Amount Weighted average common shares outstanding, basic (shares) Weighted Average Number of Shares Outstanding, Basic OTHER INCOME (EXPENSES): Other Expenses [Abstract] Senior secured notes and debentures(a) Senior Secured Notes and Debentures [Member] Senior Secured Notes and Debentures Equity Award Grants Share-Based Payment Arrangement, Activity [Table Text Block] Other, net Payment for (Proceeds from) Other Investing Activity Number of reportable segments Number of Reportable Segments Schedule of Noncontrolling Interest Purchased Schedule of Noncontrolling Interest Purchased [Table Text Block] Schedule of noncontrolling interest disclosure which includes number of units purchased during the period, average price paid, total amount paid and the effect on the statement of shareholders' equity. Total current liabilities Liabilities, Current Cox - Equity Sale Cox - Equity Sale [Member] Cox - Equity Sale Special charges, net Other Nonrecurring (Income) Expense Related Party Transaction [Table] Related Party Transaction [Table] INVESTMENT IN CABLE PROPERTIES: Investment In Cable Properties [Abstract] Supplier Finance Program, Obligation, Current, Statement of Financial Position [Extensible Enumeration] Supplier Finance Program, Obligation, Current, Statement of Financial Position [Extensible Enumeration] Entity Address, City or Town Entity Address, City or Town Stock Compensation Plans [Abstract] Stock Compensation Plans [Abstract] Stock Compensation Plans [Abstract] Income from operations Operating Income (Loss) 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 Stock Compensation Plans: Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Current Fiscal Year End Date Current Fiscal Year End Date Total other income (expenses), net Total Nonoperating Income Expense including Interest Expense, Net Total Nonoperating Income Expense including Interest Expense, Net Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Basis of Accounting, Policy Basis of Accounting, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Video Residential Video Product Line [Member] Residential Video Product Line [Member] 5.750% Sterling Senior Notes Due June 2, 2031 5.750% Sterling Senior Notes Due June 2, 2031 [Member] 5.750% Sterling Senior Notes Due June 2, 2031 Receivable [Domain] Receivable [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Customer relationships, accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Entity File Number Entity File Number Exercise of stock options Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture EIP Financing Facility Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Current portion of long-term debt Long-Term Debt, Current Maturities Distributions to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Equipment Installment Plan Financing Facility Equipment Installment Plan Financing Facility [Text Block] The entire disclosure for the Equipment Installment Plan Financing Facility Common stock, shares issued (shares) Common Stock, Shares, Issued Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Noncash interest, net Amortization of Debt Discount (Premium) Entity Information [Line Items] Entity Information [Line Items] Treasury Stock (shares) Treasury Stock, Common, Shares Treasury stock at cost; 10,324,746 and no shares, respectively Treasury Stock, Value Commercial revenue Commercial Product Line [Member] Commercial Product Line [Member] Segment Reporting Segment Reporting [Table Text Block] Noncontrolling Interests Noncontrolling Interest [Member] Other expense Other Cost and Expense, Operating Use of Estimates, Policy Use of Estimates, Policy [Policy Text Block] Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Related Party Related Party [Member] Product and Service [Domain] Product and Service [Domain] Related Party [Axis] Related and Nonrelated Parties [Axis] Class of Stock [Line Items] Class of Stock [Line Items] Noncontrolling Interests Noncontrolling Interest Disclosure [Text Block] Class A Common Stock Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Carrying Value Long-Term Debt Common Units Member Units [Member] Less: Net income attributable to noncontrolling interests Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Internet Residential Internet Product Line [Member] Residential Internet Product Line [Member] Charter Charter [Member] Charter Communications, Inc. Supplier Finance Program [Line Items] Supplier Finance Program [Line Items] DEFERRED INCOME TAXES Deferred Income Tax Liabilities, Net Supplier Finance Program [Domain] Supplier Finance Program [Domain] Accounts payable, accrued and other current liabilities Total accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Entity Small Business Entity Small Business Document Period End Date Document Period End Date Changes in operating assets and liabilities, net of effects from acquisitions and dispositions: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Net cash flows from investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Preferred stock, shares outstanding (shares) Preferred Stock, Shares Outstanding Programming Programming Expense Programming Expense Principal Amount Debt Instrument, Face Amount Security Exchange Name Security Exchange Name Long-Term Debt assumed in business combination Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent Customer relationships, net of accumulated amortization of $18,078 and $17,875, respectively 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). Open Market Repurchase Program Open Market Repurchase Program [Member] Open Market Repurchase Program Award expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period OTHER NONCURRENT ASSETS Other noncurrent assets Other Assets, Noncurrent Document Type Document Type Debt Instrument, Repurchased Face Amount Debt Instrument, Repurchased Face Amount Programming costs Program Rights Obligations, Current Gain (loss) on extinguishment of debt Gain on extinguishment of debt, net (see Note 4) Gain (Loss) on Extinguishment of Debt Loss on disposal of assets, net Gain (Loss) on Disposition of Assets Entity Shell Company Entity Shell Company Class B Common Stock Common Class B [Member] Remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Interest Interest Payable, Current Borrowings of long-term debt Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Segment Reporting, Policy Segment Reporting, Policy [Policy Text Block] Earnings Per Share Earnings Per Share [Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name EARNINGS PER COMMON SHARE ATTRIBUTABLE TO CHARTER SHAREHOLDERS: Earnings Per Share [Abstract] Number of units purchased (shares) Noncontrolling Interest, Purchase of Interests, Shares Purchased Number of shares purchased from noncontrolling shareholders resulting in a decrease in noncontrolling interests during the period. Document Fiscal Period Focus Document Fiscal Period Focus Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Advertising sales Advertising sales [Member] Advertising sales [Member] Supplier Finance Program [Axis] Supplier Finance Program [Axis] Trading Symbol Trading Symbol REVENUES Revenues Loss on equity investments, net Income (Loss) from Equity Method Investments Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Purchase of noncontrolling interest Minority Interest Decrease From Redemptions Purchase Price Gross purchase price related to the decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). Accounts payable, accrued liabilities and other Increase (Decrease) in Accounts Payable and Accrued Liabilities Senior unsecured notes Senior Unsecured Notes [Member] Senior Unsecured Notes Schedule of effects on statement of shareholders' equity due to ownership changes Schedule of effects on statement of shareholders' equity due to ownership changes [Table Text Block] Schedule of noncontrolling interest disclosure due to changes in ownership and the effect on the statement of shareholders' equity. Receivable Type [Axis] Receivable Type [Axis] Distributions to noncontrolling interest Payments of Ordinary Dividends, Noncontrolling Interest Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period COSTS AND EXPENSES: Operating Costs and Expenses [Abstract] LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration] Intangible Asset, Finite-Lived, Impairment Loss, Statement of Income or Comprehensive Income [Extensible Enumeration] Borrowings of equipment installment plan financing facility Borrowings of equipment installment plan financing facility Proceeds from borrowings of equipment installment plan financing facility Other costs of revenue Other costs of revenue Other costs of revenue Accounts Payable and Accrued Liabilities [Abstract] Accounts Payable and Accrued Liabilities [Abstract] Award Type [Domain] Award Type [Domain] Share buybacks Treasury Stock Acquired Shares Repurchased [Member] Shares repurchased under a stock repurchase program. Minority Interest Ownership Percentage Threshold Subsidiary, Ownership Percentage, Parent Accounting for Derivative Instruments and Hedging Activities [Abstract] Accounting for Derivative Instruments and Hedging Activities [Abstract] Accounting for Derivative Instruments and Hedging Activities [Abstract] Treasury stock acquired (shares) Treasury Stock, Shares, Acquired Equipment installment plan receivable Equipment installment plan receivable [Member] Equipment installment plan receivable Ownership percentage held by noncontrolling interest (percentage) Subsidiary, Ownership Percentage, Noncontrolling Owner Related Party Transactions [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Restricted cash Restricted Cash Short-term borrowings Other Short-Term Borrowings Noncontrolling Interests [Abstract] Noncontrolling Interests [Abstract] Noncontrolling Interests [Abstract] Percentage of Voting Interests Acquired (percentage) Business Combination, Voting Equity Interest Acquired, Percentage Weighted average common shares outstanding, diluted (shares) Weighted average common shares outstanding, diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Related Party Transaction [Line Items] Related Party Transaction [Line Items] Value of Equity Interest Issued Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value Entity Tax Identification Number Entity Tax Identification Number Legal Entity [Axis] Legal Entity [Axis] Accounting for Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Entities [Table] Entities [Table] Purchases of treasury stock, including excise tax Treasury Stock, Value, Acquired, Cost Method Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Value of Charter Class A common stock acquired from Liberty Broadband during pendency of Liberty Broadband combination Value of Charter Class A common stock acquired from Liberty Broadband during pendency of Liberty Broadband combination Value of Charter Class A common stock acquired from Liberty Broadband during pendency of Liberty Broadband combination Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Debt Instrument [Axis] Debt Instrument [Axis] Payments to Acquire Businesses Payments to Acquire Businesses, Gross Stock compensation expense Share-Based Payment Arrangement, Noncash Expense Treasury Stock Treasury Stock, Common [Member] Small business Commercial Small and Medium Business Product Line [Member] Commercial Small and Medium Business Product Line [Member] Stock compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Treasury Stock Acquired [Axis] Treasury Stock Acquired [Axis] Treasury Stock Acquired [Axis] Level 1 Fair Value, Inputs, Level 1 [Member] Total Debt Summary Schedule of Debt [Table Text Block] Purchase of noncontrolling interest Payments for Repurchase of Redeemable Noncontrolling Interest Organization, Consolidation and Presentation of Financial Statements [Abstract] Basic (dollars per share) Basic earnings per common share attributable to Charter shareholders (dollars per share) Earnings Per Share, Basic Purchase of treasury stock Payments for Repurchase of Common Stock Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Supplier Finance Program [Table] Supplier Finance Program [Table] Assumed exercise or issuance of shares relating to stock plans Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements LONG-TERM DEBT Long-Term Debt, Excluding Current Maturities EIP Unpaid Principal Balance EIP Unpaid Principal Balance Total amount of the unpaid principal balance of equipment installment plan receivables included within accounts receivable, net and other noncurrent assets Award Type [Axis] Award Type [Axis] Liberty Broadband Liberty Broadband [Member] Liberty Broadband Accounts receivable, less allowance for doubtful accounts of $238 and $219, respectively Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Class of Treasury Stock Class of Treasury Stock [Table Text Block] Accumulated deficit Retained Earnings (Accumulated Deficit) Preferred stock, par value (dollars per share) Preferred Stock, Par or Stated Value Per Share Product and Service [Axis] Product and Service [Axis] Fair Value Long-Term Debt, Fair Value Common Stock Common Stock [Member] Marketing and residential sales Selling and Marketing Expense EQUIPMENT INSTALLMENT PLAN FINANCING FACILITY EQUIPMENT INSTALLMENT PLAN FINANCING FACILITY Amount, after deduction of debt issuance cost, of equipment installment plan financing facility classified as noncurrent. Supplier Finance Program, Obligation, Current Supplier Finance Program, Obligation, Current Cover page. Cover [Abstract] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Conversion price (amount per share) Conversion price (amount per share) The price per unit of the conversion feature Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Noncontrolling Interests: Noncontrolling Interest [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Segment Reporting Segment Reporting [Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Revenue Disaggregation of Revenue [Table Text Block] Total liabilities and shareholders’ equity Liabilities and Equity Total shareholders’ equity Balance Balance Equity, Including Portion Attributable to Noncontrolling Interest Voice Residential Voice Product Line [Member] Residential Voice Product Line [Member] Stock options Share-Based Payment Arrangement, Option [Member] Change in fair value of cross-currency derivative instruments Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Noncontrolling interests Equity, Attributable to Noncontrolling Interest Business Combination [Line Items] Business Combination [Line Items] Related Party [Domain] Related and Nonrelated Parties [Domain] Common stock, shares authorized (shares) Common Stock, Shares Authorized Nature of Operation, Product Information, Concentration of Risk [Table] Nature of Operation, Product Information, Concentration of Risk [Table] Total Debt Long-Term Debt [Text Block] Total Charter Shareholders’ Equity Parent [Member] 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. Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] CASH FLOWS FROM INVESTING ACTIVITIES: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Other operating expenses, net Other operating (income) expenses, net Other Operating Income (Expense), Net SHAREHOLDERS’ EQUITY: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common Stock [Abstract] Common Stock [Abstract] Common Stock [Abstract] Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Charter Operating Charter Operating [Member] Charter Operating [Member] Document Quarterly Report Document Quarterly Report EIP Financing Facility EIP Financing Facility [Member] EIP Financing Facility Gain (Loss) On Financial Instruments, Net Gain (Loss) On Financial Instruments, Net [Abstract] Gain (Loss) On Financial Instruments, Net [Abstract] Accrued and other current liabilities: Accrued Liabilities, Current [Abstract] Time Warner Cable Time Warner Cable LLC [Member] Time Warner Cable LLC Preferred stock, shares authorized (shares) Preferred Stock, Shares Authorized Derivatives: Derivatives, Fair Value [Line Items] Preferred stock; $0.001 par value; 250 million shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Cox - Contribution Cox - Contribution [Member] Cox - Contribution Repayments of long-term debt Repayments of Long-Term Debt 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. Exercise cost Treasury Stock Acquired Shares Withheld Stock Option Exercise Costs [Member] Shares withheld representing the exercise costs owed by employees upon exercise of stock options. Liberty Broadband's equity percentage in Charter after Charter's buyback of Liberty Broadband shares during pendency of Liberty Broadband combination Liberty Broadband's equity percentage in Charter after Charter's buyback of Liberty Broadband shares during pendency of Liberty Broadband combination Liberty Broadband's equity percentage in Charter after Charter's buyback of Liberty Broadband shares during pendency of Liberty Broadband combination Class of Stock [Domain] Class of Stock [Domain] Business Combination [Table] Business Combination [Table] Mergers and Acquisitions Disclosures Mergers, Acquisitions and Dispositions Disclosures [Text Block] Equity Component [Domain] Equity Component [Domain] CASH PAID FOR INTEREST Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Treasury Stock Acquired [Domain] Treasury Stock Acquired [Domain] [Domain] for Treasury Stock Acquired [Axis] Accounts payable – trade Accounts Payable, Trade, Current Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Customer operations Customer operations Customer operations costs Noncontrolling Interest [Domain] Noncontrolling Interest [Domain] [Domain] for Noncontrolling Interest [Axis] Purchase of noncontrolling interest, net of tax Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Total costs and expenses Costs and Expenses Stated interest rate (percentage) Debt Instrument, Interest Rate, Stated Percentage Total Charter shareholders’ equity Equity, Attributable to Parent Other income (expenses), net Other income (expenses), net Nonoperating Income (Expense) Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Business Combination, Consideration Transferred, Equity Interest, Type [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Other, net Other Noncash Income (Expense) A/N A/N [Member] A/N ASSETS Assets [Abstract] Long-term Debt: Debt Instrument [Line Items] Income Statement Effects of Financial Instruments Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Number of Shares of Equity Interest Issued (shares) Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Cox - $1.00 Cox - $1.00 [Member] Cox - $1.00 Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Other, net Proceeds from (Payment for) Other Financing Activity Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Deferred income taxes Deferred Income Tax Expense (Benefit) Cross Currency Derivatives Currency Swap [Member] Cash and cash equivalents Cash and Cash Equivalent Business Combination [Domain] Business Combination [Domain] Interest expense, net Interest Income (Expense), Nonoperating Gain (loss) on financial instruments, net Gain (loss) on financial instruments, net (see Note 8) Gain (Loss) on Derivative Instruments, Net, Pretax Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Restricted stock units Restricted Stock Units (RSUs) [Member] Entity Central Index Key Entity Central Index Key Property, plant and equipment, accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Additional paid-in capital Additional Paid in Capital, Common Stock Business Combination [Axis] Business Combination [Axis] Net cash flows from operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Stock, Class of Stock [Table] Stock, Class of Stock [Table] Consolidated net income Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest 5.500% senior secured notes due May1, 2026 5.500% senior secured notes due May1, 2026 [Member] 5.500% senior secured notes due May1, 2026 CURRENT ASSETS: Assets, Current [Abstract] Derivative Liability Derivative Liability Income Statement [Abstract] Income Statement [Abstract] Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Entity Address, Address Line One Entity Address, Address Line One Impairment on a non-strategic asset Intangible Asset, Finite-Lived, Impairment Loss Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Connectivity Connectivity [Member] Connectivity Income tax expense Income Tax Expense (Benefit) Dividend rate of preferred unit (Percentage) Preferred Stock, Dividend Rate, Percentage Deferred revenue Deferred Revenue, Current NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Other Other services [Member] Other services [Member] City Area Code City Area Code Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Business Combination, Consideration Transferred, Equity Interest, Type [Axis] Net income attributable to Charter shareholders Net income attributable to Charter shareholders Net Income (Loss) Attributable to Parent Restricted stock Restricted Stock [Member] Statement [Table] Statement [Table] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Remaining period over which to recognize unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 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). Statement [Line Items] Statement [Line Items] Total assets Assets Entity [Domain] Entity [Domain] Common Stock Common Stock [Text Block] The entire disclosure for common stock. Preferred stock, shares issued (shares) Preferred Stock, Shares Issued Mid-market & large business Commercial Enterprise Product Line [Member] Commercial Enterprise Product Line [Member] 5.250% Sterling Senior Notes Due July 15, 2042 5.250% Sterling Senior Notes Due July 15, 2042 [Member] 5.250% Sterling Senior Notes Due July 15, 2042